Carbureter.



1i.' A. MILLER.

I pARBURETExf APPLICATION FILE) HOV. 18,*1909.

- To all ALoh-ovm it may concern:

UNITED sTATEs PATENT e@ 'ii'niiY A. Minnen, or Losliiinms, minorenni.

CARBURETER.

Be it 'known that l', HARRY A. M TLLER, a citizen of the United States resldmg lat Los Angeles, in the county of Los Angeles and, State of California, have invented a new and useful Carbiireter, of which `the following is a specification.

This invention relates'to carbureter's and one ot' the main' objects of the invention is ning. erated from the seat of the car and the ad-.

A further object is to provide an extra adjustment for securing a. greater amount of gasolene at high speeds, `"vhieh adjustment 11s capable of operation While vthe carl 1s run- This extra. adjustmentl may be opvertical, longitudinal section through-the carbureter. Fig. 2 is a sectional view, partlyin elevation, of the-lower portion of the car- 4.sect-ion, of the adjustable' nozzle.

bureter. Fig. 3 1s a. plan view of the float lever. Fig. 4 is a section on line @i4- x4 in Fig. 1. Fig. 5 is a. side elevation, partly in Fig. G is a. bottoni viewin det-ail oi the spreader.

. 1- designates a tubular suction' chamber 'which has. a cone`2y at its uppcrend, the lower end of the tube 1 being tapered to a thin edge at 3 and thetube being closely fitted Within a Acylindrical casing v4. tending longitudinally on -the casing 4 are Afour flanges 5. -A base C is screwed tothe -lower end of the'casing 4 and is retained by. Aa lock nut 'i'.

shoulder 8 which receives the lower edge Aofa glass tube 9 \"hi'ch forms the outer wall of Tlic base G is formed with a an annular float chamber lO'within whichisv a-float 11, the latter being guided by'tli'e four tianges 5. 'A float .valve lever 12 is pivoted at 13 and its orks 14 lie under the float 11 as shown in Fig. 2, While itsnotched arm 15 engages under. 'a shouldered "sleeve V16 which isv slidable in a tubular guide. 17. The upper end of the guide 17 ,is closed -by a cap 18 which is serewedthereto. vSecured in the sleeve 16 is avalve 19, the upper end of which extends through the 'cap 18 and a' coil spring 2Q within the cap 18 serves to Specification of Letters Patent. Patented June 28 191g; Application filed November 1G, 1909. Serial No. 528,399..

normally press tlie valve 19 against its seat.

21 through which gasolene is admitted from4 an inlet passage 22 to the interiorlof thebase G and thence to float chamber 10. A reduction or increase in the level of gasolene With,-

in the cha1nber,10lowers or raises thev Boat 11 and raises orlowers the valve 19, thereby' automatically maintaining a substantially/'1r *I constant level in the chamber 10 in a man-1 ner well knownin the art.

p I he upper end of the casing 4 has a cap 23 with a downturned Hangs 24 which conlines the upper edge ofthe glass tube 9 and -tlie cap 23 is provided Wit-l1 a. v'ent`25. Legs .26'y project up from thecap 23 and Support a' .r1ng'27 to whichl is screweda bell-shaped mixing cha1nber'28 having a. neck 29 with a. j

fiange 30. 31 :is a throttle Avalve pivoted within the neck 29 and adapted 4to be opl erated -by an arm 321in'dicated in dottedi lines.

The ring 27 has aninwardly projecting flange which forms aseat` for the cone 2 vvhen the latter is lowered. A' spreader .34 1s supported at the mouth of the funnel 2 by screws 35 which engage 1ugs 64 `formed on the spreader 34,so that as the tube l'rises the spreader 34 rises .with it and the size of I the annular space 3 7 around the rim vof the spreader 3l is always constan-t. Projecting above the spreader 34 is a holleT boss 38, which slidably :receives a head 39 on-a valve rod 40. The valve rod 40iextcnds' down from the head 39 through a p ost 41.011 the underside of the spreader 34 and the post 41 is recessed to receive a coilspring 42 which 'serves to normally elevate the valve rod '40.. A shaft 43 is mounted .to rotate in a bearin 44 formed in the bell f28 and is connecte by a universal'joint 45 with an operating rod 46 which may extend to the i seat of the automobile, 'not shown-,or to any other convenient position. A screw 47 and leather shoe 48 acting in a groove 49 exert suiicient friction on the sha-ft #t3-'to prevent it from turning accidentally. The inner end of the shaft 43 is provided with an eccentric 50, the angular position of'which determines the limit of upward movement .of-` Athevalve 'rod 40.l A flange 5.1 onl shaft 43 acts as a stop against which the spreader 34 thereof. j v

In the lower. end of the casing 4 is lpost loc los

rmay "strike within the upward movement j 11e- 52 which is internally threaded i novssle. the latter being Sllwrlillll in ig. 5, and consisting-of an intermediate' externally threaded portion 54 and having a central gasolene passage 55 which connects being taper with a cross `as sage 5.6. which conducts gasf gglnli..fiidiiiaeitherside of the nozzle to the central passa e55, the `mouth of the' `,latter as at 57 "and the valve rod 40 into the tapered mouth 57. The

box 54,

through the carburetor and stufiing t e nozzle as 'clearl shown in-Fig. 1, and.

. 53 may e unscrewed from the post 52 andv entirely removed from the carbureter without`- requiring access to the interior of the. carbureter, or without taking the carbureter In operation, during the suction stroke of #I Vthe englne the suction generated Within the mixing chamber 28 acts through theannular space 37 to suck gasolene up from the nozzle 57 through the suction chamber l and out throu h the;V annular space 37 intol the bell 28, w ich, when the engine isf running at highspeeds, is sufficient to lift the cone 2 fromits seat against flange 33, thus permittinfgair to flow into the bell 28 between the -cone 2 and flange 33 when the cone is lifted asnindicated in dotted lines in Fig.v 1, and

the airvthus admitted mixes with the gasolene vapor which has been drawn into the mixing chamber 28` and passes thence through the neck 29 into the engine. As the s reader 34 lifts during thesuction stroke,

" t e'valve rod 4:0 is'also lifted tov open thev mouth of the nozzle 53. By turning rod ,4:6 to move the eccentric 50 lower, it will. revent the head 39 from rising-to its hi lest oint when `the spreaderfi moves up, t erey restricting the amount of gasolene which is allowed to ass out through the mouth of the nozzle. bv-iously the speed maybe increased by turning the eccentric 5 0, so that the head 39 and rod 4() can rise-to a higher oint. This adjustment is provided for' igh speeds, that is, speeds greater than about' twenty-five miles an hour. For

speeds' lower than that, :the 'adjustment is secured by screwing' the `nozzle 53 up or down as at the low speeds the suction 1s not sufficient to lift the rod 40 out of the nozzle.

'One of the best features of this invention "il, Ina carbnreter a nozzle, means for 'supplying gasolene thereto, a rod slidable above the nozzle with its lower end extending into the' mouth thereof, a shaft extendi 4lng into the carbureter, `aneccentric on the a flange on the `shaft forming a stop to Athe upward movement of the spreader.

of the nozzle 53 projects-downA formed nozzles, which are de.

\ esame shaft adapted to. limit the upward stroke of. the rod, a spreader surrounding the rod'an'dl 2. In a carbureter, Yan annular float chamber, a mixing chamber above the float chamber, an inverted conc Witha slidable support therefor enabling. a vertical movement of the cone,'a spreader in the mouth ofthe cone leaving an annular space at the edge of the cone, said cone normally closing the lower part of the mixing chamber and lifted by suction within the mixing chamber, and a nozzle directed toward the cone.

' 3.-In a carbureter, an annular float chamber,a mixing` chamber above the float cha-mber, an inverted cone with a slidable support therefor enabling a vertical movement of the cone, said/cono` normally closing the lower part of the mixing chamber and 'lifted by suction within the mixing chamber', said sli'dable support being hollow, a nozzle di rected into the'lower part of said support, and a rod supported bythe cone and extend ing to the mouth of the nozzle.

4'., In a ca rbureter, an annular float' chambei', a mixing chamber above the floatchamber, an invertedcone with a slidable sup# lower part ofthe mixing chamber and lifted b suction within the mixing chamber said v s idable support being hollow, a nozzle directed into the'lower part 0f said support, a spreader carried by the cone forming an annular s ace between the cone and rim of 'the Sprea er,'and a rod yieldingly supported by the spreader and extending into the mouth of the nozzle.

'port therefor enabling a vertical movement. iof the cone, said cone normally closin/gthe" 5. .Ina carbureteman annular float cham` ber, a mixing chamber abovethe float chamber, an inverted 4cone with a slidable support therefor' enabling a verticalv movement.

of the cone, said coney normally closing the lower part of the mixing chamber and liftedA by suction .within the mixing chamber said slidable support being hollow, a nozzle directed into vthe lower part of said support,

a spreader carried by the cone forming `an 'annular space between the cone and rim of theV spreader, a rod'yieldingly supported bythe' spreader and extending into the mouth of the nozzle, a' shaft extending into the -mixing chamber above the spreaderJ and an eccentric lug on the shaft to wa'rd movement of the rod..

In testimony whereof, I have hereunto set my hand at Los Angeles,.0ali fornia, 'this` 2li-day of October 1909.

f HARRY A. MILLER.

AIn `presence olf- G. T. HAcxLY, FRANK L A. GRAHAM."

limit the up 

